Plaster-package.



PATENTED JUNE 16, 1903.

- F. F. HAWKINS.

PLASTER PACKAGE. APPLICATION IILIED SEPT. 11. 1899.

10 MODEL.

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g UNITED STATES Patented June 16, 1903.

PATENT OFFICE.

PLASTER-PACKAG E.

SPECIFICATION formingpart of Letters Patent No. 730,911, dated June 16,1903.

Application filed September 11, 1899. Serial No. 130,068. (No modeli) ToaZZ whom it may concern.-

Be it known that I, FRANK F. HAwKINs, a citizen of the United States,residing-at Troy, county of Rensselaer, and State of New York, haveinvented certain new and useful Improvements in Plaster-Packages, ofwhich the following is a specification.

The invention relates to such improvements; and it consists of the novelconstruction and combination of parts hereinafter described andsubsequently claimed. I

Reference may be had to the accompanying drawings, and the referencecharacters marked thereon, which form a part of this specification.

Similar characters refer to similar parts in the several figures.

Figure 1 of the drawings is a plan view of an adhesive sheet withmedicament applied theretoandacoveringsheetsuperposedthereon as the sameappears in the operation of making my improved plaster-packages, aportionof the covering-sheet being broken away. Fig. 2 is a crosssectionof such a sheet superposed upon a supporting-block with the die inposition for cutting out one of the plasterpackages. Fig. 3 is a planview of the plasterpackage. Fig. 4 is a cross-section of the same, taken011 the broken line a 4 in Fig.

The object of my invention is to supply to the trade adhesive plastersin a convenient form, with their adhesive surface protected from contactwith external objects, and to protect medicament which may be depositedupon such adhesive surface from the action.

of the atmosphere.

In carrying out my invention I apply to each separate plaster aprotecting-cover, secured thereto by adhesion only along its peripheraledge.

Referring to the drawings, 1 represents a plaster-sheet having anadhesive surface 2, the same being any known form of'adhesive plaster,such as thewell-known rubber plaster. Upon the adhesive surface of thissheet I preferably apply medicament in any desired quantity. The sheet 1is preferably of a size sufficient to include a number of plasters, andthe medicament is preferably applied thereto at intervals and in smallquantities, as shown at 3 in Fig. 1, such deposits of medicament beingseparated by intervals of the adhesive surface of the plaster-sheet. henthe inedicament has been so applied to the adhesive sheet, I superposethereupon a covering-sheet 4, preferably of non-adhesive material, as

.shown in Figs. 1 and 2. The duplex sheet thus formed is then subjected,while supported upon a block or table 5, to the action of the die 6,-adapted to cut therefrom plasters of a desired size, so out that eachplaster will contain one of the deposits 3 of medicament. A hollow dieis employed for this purpose having a sharp cutting edge, whereby theoperation of cutting the plaster from the sheet forces down intoengagement with the adhesive sheet that portion of the covering-sheetengaged by the edge of the die, whereby the die cuts from the duplexsheet both a portion of the adhesive sheet and a like portion of thecoveringsheet, each of the size desired for the plaster.

The cutting operation not only serves to define the shape of theplaster, but also serves to force together tightly the peripheral edgesof the cut-off portion of the adhesive sheet and covering-sheet,therebysecuring the coveringsheet to the adhesive sheet with the adhesivesurface inclosed between the two sheets and protected thereby.

The covering-sheet may be of any desired material; but I prefer to usesome non-adhesive material impervious to air and moisture, such as waxor paraffin paper, whereby when the same is applied to a sheet of rubberplaster and portions are cut therefrom by a die in the manner LbO"6described a hermetically-sealed chamber will be formed between the twosheets, wherein a deposit of medicament upon the adhesive sheet can beretained for an indefinite period without deterioration from atmosphericaction.

lVhen it is desired to use one of the plasters, a package may be openedby separating the cohering edges at one point and then pulling the twosheets apart, leaving the adhesive surface of the plaster-sheet readyfor application to the place desired.

By having the covering-sheet secured by adhesion only to the peripheraledge of the plaster-sheet I am able to retain the adhesive qualities ofthe plaster-sheet and at the same time aiford protection to the whole ofsuch adhesive surface.

IVhen desired, the deposits 3 of medicament may be omitted, and, ifdesired, the medicament my be incorporated in the adhesive sub stancewith which the surface of the plastersheet is coated.

The plaster-sheets may be prepared of any known size and the plaster cuttherefrom by a gang of dies in any known manner.

By the use of wax or paraffin paper as a covering for the adhesive sheetI am able to greatly facilitate the operation of cutting out theplasters, for the reason that at each cutting operation the edge of thedie is lubri-' cated by the wax or paraffin and prevented thereby fromcontact with the adhesive substance with which the plaster-sheet iscoated, so that the plaster-packages readily fall away from the dieafter the cutting operation without adhesion thereto.

My improved plaster-packages can be safely handled and packed togetherfor the trade without danger of their adhesion to external objects orone to another, thereby greatly facilitating their transportation. I

\Vhat I claim as new, and desire to secure by Letters Patent, is

l. A plaster-package comprising medicament in a form susceptible toatmospheric influences inclosed in a hermetically-sealed chamber formedbetween two impervious sheets, one adhesive and the other non-adhesive,one of said sheets being superposed upon the other, and having theiredges, only, in sealed adhesive contact with each other.

A plaster-package comprising in combination two impervious sheets, oneadhesive, the other non-adhesive, applied one to the other, and havingtheir peripheral edges,

only, forced into sealed adhesive contact with each other, therebyforming between saidimpervioussheetsahermetically-sealedchamber betweeninner portions of said sheets not in adhesive contact; and medicament,in a form susceptible to atmospheric influences, supported upon saidadhesive sheet within said chamber. y

A plaster-package comprising an impervious adhesive sheet; a deposit ofmedicament on the central portion thereof; and an imperviousnon-adhesive sheet superposed upon said adhesive sheet and medicament,the extreme edges, only, of said impervious sheets being in sealedadhesive contact, and their intermediate portions surrounding saidmedicament being not in adhesive contact.

t. A plaster-package comprising medicament in a form susceptible toatmospheric influences inclosed in a hermetically-sealed chamber formedbetween two impervious sheets, one of which is adhesive, the edges ofsaid sheets being die-cut and sealed, substantially as described.

5. A plaster-package comprising medicament inclosed between two sheetsone of which is adhesive, the edges of said sheets being die-cut, andthe cut edges, only, forced into adhesive contact with each other bydiepressure only.

In testimony whereof I have hereunto set my hand this 9th day ofSeptember, 1899.

FRANK F. HAVKINS.

\Vitnesses:

FRANK C. CURTIS, E. M. OREILLY.

